package ExecuteEngine;

import java.util.List;

import sql.IndexItem;
import Const.RC;

public class Special_op extends Operation{
	public int op;
	public String rel;
	public IndexItem index;
	public String view;
	
	public final static int PLUS = 0;
	public final static int MINUS = 1;
	
	public Special_op(){
		rel = null;
		index = null;
		view= null;
		this.type = Operation.SPECIALOP;
	}
	
	public RC.rc Open(){
		return RC.rc.SUCCESS;
	}
	
	public boolean hasNext(){
		return false;
	}
	
	public Tuple GetNext(){
		return null;
	}
	
	public void Close(){
		
	}
	
	public List<String> GetTitles(){
		return null;
	}
}
